A person who is Jewish or displays traits commonly attributed to one who is Jewish. This person exhibits greed, selfishness, prejudice toward any non-Jewrats, and a generally hypocritical view toward life. A full-blooded Jewrat will often have a prominently bridged, larger than life nose. Audibly, the Jewrat can be heard from great distance by either jingling pockets or over-annunciated speech, or both.

Jimmy waited outside patiently for Synagogue to end, at which time he tossed a shiny penny into the crowd and watched as the Jewrats tore each other limb-from-limb in an attempt to increase their wealth.

A person who puts off blatant jewish traits; such as extreme cheapness, a blatant disregard of someone or something for money, agreeing with anyone and everyone in order to fit in, or is just somebody who you really do not want to hang around with.

"Man, Morgan agrees with every single thing that Brandon says, what a dirty jewrat."